diff --git a/requirements.txt b/requirements.txt
index ce7a916..b17ff55 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 argparse
-climetlab>=0.17.8
+climetlab>=0.9.0
 numpy
 pandas
 wheel>=0.22
diff --git a/setup.py b/setup.py
index 1eb3348..357d60d 100644
--- a/setup.py
+++ b/setup.py
@@ -35,7 +35,7 @@ def read(fname):
     install_requires=[
         "argparse",
         "datetime",
-        "climetlab>=0.17.8",
+        "climetlab>=0.9.0",
         "future",
         "numpy",
         "six",